package com.jcvision.mms.filter;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.jcvision.mms.model.SysUser;

public class LoginCheckFilter implements Filter {

	@Override
	public void destroy() {
	}

	@Override
	public void doFilter(ServletRequest arg0, ServletResponse arg1,
			FilterChain arg2) throws IOException, ServletException {
		HttpServletRequest request = (HttpServletRequest) arg0;
		SysUser sysUser = (SysUser) request.getSession().getAttribute("sysUser");
		String uri = request.getRequestURI();
		if(sysUser != null || uri.indexOf("/module/login") > -1 || uri.indexOf("/module/error") > -1){
			arg2.doFilter(arg0, arg1);
		}else{
			HttpServletResponse response = (HttpServletResponse) arg1;
			if(uri.length() != request.getContextPath().length() + 1){
				response.sendRedirect(request.getContextPath() + "/module/login/needLogin.jsp");
			}else{
				response.sendRedirect(request.getContextPath() + "/module/login/login.jsp");
			}
		}
	}

	@Override
	public void init(FilterConfig arg0) throws ServletException {
	}

}
